Sr. No. Tender Clause no. / page no. Category Subject Bidder’s Query / Requests IGL Response 1 Cl no 8.3.1 - ii Pg no. 11 of 100 Commercial The bidder, in the last seven (07) years from the date of issue/publish of tender, shall have engineered, manufactured, tested, supplied and commissioned at least 01 no. of Hydraulic CNG Booster of minimum 250 SCMH capacity or above to the customer from the proposed facility of manufacturing. Request to consider compressor supplied on wet-lease model for BQC. Tender Condition Prevails. 2 Cl no 8.4.1 Pg no. 11 of 100 Commercial Annual Turnover: The bidder should have achieved the minimum annual turnover of Rs. 87.63 Lacs in any one of the last three preceding financial years. Request to relax BQC on annual turnover with the submission of Balance sheet for FY2020-21 (6 Months). Tender Condition Prevails. 3 7.0 DETAILS OF BID DOCUMENTS Pg no. 8 of 100 Commercial Bid submission due date and time Request to extend Bid submission date to 15.10.2021 Refer Corrigendum-I 4 Cl no. 17.0 Pg no. 26 of 95 Commercial Payment towards Supply (Booster Package) Request to consider 90% payment at Dispatch and 10% payment after Erection and commissioning. Tender Condition Prevails. 5 Cl no. 5.0 Pg no. 7 of 100 Commercial Supply (Delivery Period for subsequent lots – Within 8 weeks on ex-works basis from date of intimation from IGL) Request to change the delievry as: 16 Week to 20 Weeks Tender Condition Prevails. 6 Cl no. 5.0 Pg no. 7 of 100 Commercial Location for Group B Please clarify the Location of Group B Motor Driven Hydraulic CNG Booster Package – 550 SCMH IGL's authorised GA's are specified in the tender document and boosters shall be procured as per requirement. 7 Cl no. 8.0 Pg no. 7 of 100 Commercial BIDDER EVALUATION CRITERIA (BEC) Bidder requests IGL to include 10% procurement under Start-up public prucrement policy by Govt. of India & relax Financial BQC/BEC as per the Start-up Public Procurement policy. Tender Condition Prevails. 8 4.9 Pg no 11 of 95 Technical Air-cooled heat exchanger for inter stage and discharge gas Request to consider water cooler Heat exchangers for CNG Booster compressor. Ultimate cooling will be done by air in Radiator. Tender Condition Prevails. 9 4.18 Pg no 11 of 95 Technical One no. relief valve at each stage discharge, first (1st) stage suction. Request to consider Relief valve at Discharge of each stage for two stage compressor. Request to remove One no. relief valve from 1st stage suction line as CNG Booster compressor has inlet from LCV Cascade or Stationary Cascade and these cascades are having SRV in each Bank. i.e., 6 Nos. of SRVs are installed in the suction line at these Cascades. Refer Corrigendum-I 10 Cl no. 5.2 Pg no. 12 of 95 Technical Silencer has to be provided in the starting air vent line Not required in Bidder's CNG Booster compressor design Bidder may supply his proprietry design. 11 5.3 Pg no. 13 of 95 Technical All drains from different process equipment’s, distance piece and packing shall be manifolded and terminated as single point for customer interface duly flanged with isolation valve. Drains should be through a common header and discharge to be allowed in a pit to avoid spillage around compressor package. CNG, Oil & Water drain line must be separated & can not be manifolded in single discharge. This requirement from your side would lead to safety issue. Tender Condition Prevails. 12 Cl no. 6.10 Pg no. 13 or 95 Technical Cooling water is not available as utility and the package shall be provided with self-sufficient cooling water system for Booster as required, with makeup tank. However cooling water for makeup tank is available Make up tank is not applicable As the Bidder's compressor has a closed cooling water circuit, hence there is no need for a separate make-up tank. Bidder may supply his proprietry design. 13 Cl no. 6.13 Pg no 13 of 95 Technical "All cabling (supply & laying) from electrical room to booster shall be in bidder’s scope." Request to consider the same in IGL's scope. Tender Condition Prevails. Reply to Pre-Bid Queries SUPPLY, INSTALLATION, TESTING, COMMISSIONING, OPERATION AND COMPREHENSIVE MAINTENANCE FOR 550 SCMH (AVERAGE FLOW) HYDRAULIC BOOSTER PACKAGE TENDER DOCUMENT NO. IGL/ET2/CP/CC16654
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The bidder, in the last seven (07) years from the date of issue/publish of
tender, shall have engineered, manufactured, tested, supplied and
commissioned at least 01 no. of Hydraulic
CNG Booster of minimum 250 SCMH capacity or above to the customer from
the proposed facility of manufacturing.
Request to consider compressor supplied on wet-lease model for BQC. Tender Condition Prevails.
2Cl no 8.4.1
Pg no. 11 of 100 Commercial
Annual Turnover: The bidder should have achieved the minimum annual
turnover of Rs. 87.63 Lacs in any one of the last three preceding financial
years.
Request to relax BQC on annual turnover with the submission of Balance sheet for
FY2020-21 (6 Months).Tender Condition Prevails.
3
7.0 DETAILS OF
BID DOCUMENTS
Pg no. 8 of 100
Commercial Bid submission due date and time Request to extend Bid submission date to 15.10.2021 Refer Corrigendum-I
4Cl no. 17.0
Pg no. 26 of 95Commercial Payment towards Supply (Booster Package)
Request to consider 90% payment at Dispatch and 10% payment after Erection and
commissioning.Tender Condition Prevails.
5Cl no. 5.0
Pg no. 7 of 100Commercial
Supply (Delivery Period for subsequent lots – Within 8 weeks on ex-works
basis from date of intimation from IGL)
Request to change the delievry as:
16 Week to 20 WeeksTender Condition Prevails.
6Cl no. 5.0
Pg no. 7 of 100Commercial Location for Group B
Please clarify the Location of Group B Motor Driven Hydraulic CNG Booster Package
– 550 SCMH
IGL's authorised GA's are specified in the
tender document and boosters shall be
procured as per requirement.
7Cl no. 8.0
Pg no. 7 of 100Commercial BIDDER EVALUATION CRITERIA (BEC)
Bidder requests IGL to include 10% procurement under Start-up public prucrement
policy by Govt. of India & relax Financial BQC/BEC as per the Start-up Public
Procurement policy.
Tender Condition Prevails.
84.9
Pg no 11 of 95Technical Air-cooled heat exchanger for inter stage and discharge gas
Request to consider water cooler Heat exchangers for CNG Booster compressor.
Ultimate cooling will be done by air in Radiator.Tender Condition Prevails.
94.18
Pg no 11 of 95Technical One no. relief valve at each stage discharge, first (1st) stage suction.
Request to consider Relief valve at Discharge of each stage for two stage
compressor.
Request to remove One no. relief valve from 1st stage suction line as CNG Booster
compressor has inlet from LCV Cascade or Stationary Cascade and these cascades
are having SRV in each Bank. i.e., 6 Nos. of SRVs are installed in the suction line at
these Cascades.
Refer Corrigendum-I
10Cl no. 5.2
Pg no. 12 of 95Technical Silencer has to be provided in the starting air vent line Not required in Bidder's CNG Booster compressor design Bidder may supply his proprietry design.
115.3
Pg no. 13 of 95Technical
All drains from different process equipment’s, distance piece and packing
shall be manifolded and terminated as single point for customer interface
duly flanged with isolation valve. Drains should be through a common
header and discharge to be allowed in a pit to avoid spillage around
compressor package.
CNG, Oil & Water drain line must be separated & can not be manifolded in single
discharge. This requirement from your side would lead to safety issue.Tender Condition Prevails.
12Cl no. 6.10
Pg no. 13 or 95Technical
Cooling water is not available as utility and the package shall be provided
with self-sufficient cooling water system for Booster as required, with
makeup tank. However
cooling water for makeup tank is available
Make up tank is not applicable
As the Bidder's compressor has a closed cooling water circuit, hence there is no
need for a separate make-up tank.
Bidder may supply his proprietry design.
13Cl no. 6.13
Pg no 13 of 95Technical
"All cabling (supply & laying) from electrical room to booster shall be in
bidder’s scope."Request to consider the same in IGL's scope. Tender Condition Prevails.
Reply to Pre-Bid Queries
SUPPLY, INSTALLATION, TESTING, COMMISSIONING, OPERATION AND COMPREHENSIVE MAINTENANCE FOR 550 SCMH (AVERAGE FLOW) HYDRAULIC BOOSTER PACKAGE
TENDER DOCUMENT NO. IGL/ET2/CP/CC16654
14Cl no. 6.14
Pg no. 13 of 95Technical
Purchaser shall provide UPS (230+1%V, 50+1%Hz) for control supply
requirement at single point (feeder in+E6 UPS ACDB) in the electrical room.Request to consider provision of UPS in IGL's scope. Tender clause is explicitly clear.
158.0 - a
Pg no. 15 of 95Technical
"…....The Booster Package shall trip if any of the enclosure is opened while
the machine is running. "
This feature is really not required and not used as this feature would lead to
frequent stopping of machines and operation would be very much hampered more
so when there are no high temperatures or heavy moving parts
Tender Condition Prevails.
16
8.1-a
bullet no. 7
Pg no. 16 of 95
TechnicalOne pressure gauge to be located at gauge panel to detect the pressure in
Cylinder shall be provided.In Bidder's design, pressure can be seen on gauge above the cylinder and on HMI. Bidder may supply his proprietry design.
178.0 - i
Pg no. 16 of 95Technical
Relief valves shall be provided at suction and discharge and each inter stages
of
Booster with setting as per cl.7.20.4 of API-618 with R.V. venting as per cl.
7.20.4 of
API-618. All vented to common relief valve header.
API is not applicable. Our Relief Valves are for CNG industry and not for oil&gas.
Standard relief valve cannot be sized for API for different relief scenarios.Tender Condition Prevails.
188.1-f
Pg no. 17 of 95Technical
CO2 Cylinders shall be provided outside the package at a safe place with aq
minimum
distance of 3 mtrs, where it is not exposed to fire in case of fire in the
Booster.
Request to clarify which clause to refer for minimum adequate safe distance, Cl no.
8.1-f, Pg no. 17 or Cl no. 8.1-o, Pg no. 17
CO2 Cylinders shall be provided outside
the package at a safe place with a
minimum distance of 3 mtrs
198.1-g
Pg no. 17 of 95Technical
Suitable online weight (CO2) loss monitoring/ indication device to be
provided to
ascertain the health of the CO2 flooding system.
We are providing the manual weight monitoring system with limit switch which is
giving "DI" to PLCBidder may supply his properitery design
20Cl no. 9.13
Pg no. 19 of 95Technical PRIORITY FILL SYSTEM
Please clarify 3 Bank or 6 Bank. Typically for Daughter Booster CNG stations, 6 Bank
Priority Panels are being used. 3 Banks for stationary Cascade filling & 3 Banks for
CNG Dispensers
Tender Condition Prevails.
21Cl no. 9.19
Pg no. 20 of 95Technical
"The Motor shall be of standard frame size
as per IS/IEC and rated for continuous duty with high efficiency and shall be
designed for
star-delta starting."
Please clarify which clause is to be considered?
Cl no.:9.19, Pg no. 20 or ANNEXURE - III Pg no 49
Please clarify starting method of motor, star-delta or soft starter?
In Bidder's design, star-delta starting method is provided, which is a standard
practice.
Refer Corrigendum-I
229.23
Pg no. 22 of 95Technical Gas recovery system This is not applicable to hydraulic Booster Compressor Design and may be relaxed Bidder may supply his properitery design
23Cl no. 9.22
Pg no. 22 of 95Technical
Oil Filter: The offered oil mist removal system shall restrict the oil to less
than 5PPM in discharge of compressor
Please clarify whether it is a gas filter or oil filter.
As we provides coalescing type filter with 1 Micron filtration and 0.1 mg/m3 of
residual oil carrying capacity.
Tender clause is explicitly clear.
24
Cl no. 9.25
bullet no. 4
Pg no. 23 of 95
Technical Heavy duty on-load phase changeover should be provided for H.E motor.Not required in Electrical Panel design. However, One incomer supply provision
available in control panel through MCBTender Condition Prevails.
25
Cl no. 9.25
bullet no. 11
Pg no. 23 of 95
TechnicalMultifunction meter also required for fan motor electrical parameters
monitoring.
One common Multifunction meter provide in control panel to measure electrical
parameter .
Fan motor load is to small so it does not require a separate Multifunction meter for
same
Tender Condition Prevails.
26
Cl no. 9.25
bullet no. 13
Pg no. 23 of 95
TechnicalThe power factor (PF) of the whole electrical system should not be below
0.95
Capacitor Bank is not required and it is not possible to provide this provision in
flame proof compressor panel due to excess heat in capacitor bank.
PF maintaining should be in the purchaser's scope in their incomer panel.
Requirement to be reviewed
Capacitor Bank will be in scope of IGL
and will be installed suitably in electrical
room.
27Cl no. 10.8
Pg no.24 of 95Technical
Pressure Transmitter and Temperature Transmitters shall be used for CNG
Gas application and not pressure and temperature switches.
In Bidder's design, to enhance mechanical safety, we provide pressure switches
along with PT, TT and SRV in discharge line.Tender Condition Prevails.
28Cl no.10.6
Pg no. 24 of 95Technical
"PLC shall be of modular in construction with EEPROM, redundant power
supply for CPU
and HMI"
One 24VDC power supply available through
SMPS to CPU and HMI.
No redundant power supply for CPU, HMI
Tender Condition Prevails.
29
Cl no.10.21
bullet no. 5
Pg no. 26 of 95
Technical Non-resettable hour meter HMR reading is available in PLC HMI, hence there is no need for a non-resettable
hour meter.Bidder may supply his properitery design
B. For Operation and Comprehensive Maintenance Services:
CPBG equivalent to 3% of total Purchase Order value for operation
and comprehensive maintenance inclusive of all taxes, duties and
charges on yearly basis (annualized).
We will provide bank guarantee value exclusive of taxes. This is being
followed in most of Public Sector CGD companies. Kindly confirm.Tender Condition Prevails
58
15. Contract
performance bank
gurantee
Commercial
Within thirty (30) Days of receipt of the respective Purchase Order,
the successful bidder shall furnish to the Purchaser the Contract-Cum-
Equipment Performance Bank Guarantee (CPBG) as follows:
B. For Operation and Comprehensive Maintenance Services:
CPBG equivalent to 3% of total Purchase Order value for operation
and comprehensive maintenance inclusive of all taxes, duties and
charges on yearly basis (annualized).
For Operation and comprehensive maintenance services, the bank gurantee
shall be provided for each booster as and when the O&M starts for 12
months which shall be renewed thereof for subsequent years before expiry.
Bidders Understanding is Correct.
59
13.3 Penalty for
non performance
during period of
operation and
maintenance
Commercial
In any case, the maximum penalty imposed in a month for non-
performance of the
equipment turns out be 50% or more of the amount of O&M charges
to be paid to
the party per month per Booster (a complete cost break up of O&M
charges need to
be furnished by the bidder during bid), OWNER will take necessary
actions as per
terms and conditions of the contract for such non-performance.
As per standard booster compressor inquiries/tenders, the max penalty per
month should not be more than 50% of per month charge against
maintenance amount of individual. booster compressor quoted by the
supplier.
Please note that Maintenance is only related to performance, operation is
specifically related to Operators for which we are anyways required to pay.
Request you to kindly consider and incorporate the same in tender
document.
Tender Condition Prevails
60 59. Repeat order Commercial
Purchaser reserves the right, within 6 months of order to place repeat
order upto 50% of the total order value without any change in unit
price or other terms and conditions.
This repeat order shall be decided on mutual agreement between client and
supplier. Kindly confirmTender Condition Prevails
61 Wages Commercial Kindly confirm whether state wages are to be considered or central wages.Minimum Wages to be paid as per
statutory norms applicable in respective
state.
62 O&M Shift Commercial Operation will be in general shift only. Please confirm. Bidder Understanding is correct.
63 4.13 TechnicalBlock and bleed valves to be provided for Pressure gauges and pressure
Transmitters.
Block and bleed valves for pressure transmitter will be a safety hazard if islosation
valve is remains closed because of manual intervention, we suggest Block & Bleed
valves for pressure gauges used in gas line
Tender Condition Prevails
64 4.18 Technical One no. relief valve at each stage discharge, first (1st) stage suction.
There is no requirement of relief valve at the first stage suction for booster
compressor, as the suction is always reducing from 220 to 30 bar, Both first &
sencond stage are intergral part of the single intencifier, therefore not required.
Applicable for online reciprocating compressors
Refer Corrigendum-I
65 4.22 TechnicalInlet and outlet manual and automatic isolating valves for maintenance &
emergency.
Actuated BV at suction and discharge will be enough for isolation, Kindly allow the
sameTender Condition Prevails
66 6.1 TechnicalBidder to provide Instrument air with an electric motor driven air
compressor with a suitably sized receiver & Refrigerant type air drier system.
We propose heatless type air dryer instead of refrigerent type, Kindly allow the
sameTender Condition Prevails
67 6.13 TechnicalAll cabling (supply & laying) from electrical room to booster shall be in
bidder’s scope.
Kindly provide maximum length of the cable to be considered fromm electrical
room to booster
Average 50 Mtr. can be considered for
loading purpose. However, supply &
laying of cable will be done as per actual
site requriement.
Tender Condition Prevail.
68 8.1 TechnicalOne pressure gauge to be located at gauge panel to detect the pressure in
Cylinder shall be provided.
Pressure inside CO2 cylider appears only after actuation of SOV, hence monitoring
cylinder pressure not possible with gaugeBidder may supply his properitery design
69 9.25 TechnicalThe power factor (PF) of the whole electrical system should not be below
0.95.
Kindly include PF coreection in clients scope, because at station there might be
loads other than booster comressor also
Capacitor Bank will be in scope of IGL
and will be installed suitably in electrical
room.
70 10.9 Technical The selected I/O shall have 40 % s are of used capacity Kindly make it 20% of used I/O as spare Tender Condition Prevails
71 10.3 Technical Redundancy in PLC is required
Redundant CPU & power supply is not required, as booster compressor beeing
independently operated,
Instead spare CPU and power supply unit will be provided along with each package
to avoide breakdown.
Tender Condition Prevails
72 ANNEXURE - III Technical Anti-condensation Heaters / Space Heater for motor 30kW and above Kindly allow to use motor without space heater Tender Condition Prevails
73 Technical Field of View 120° cone of vision (or) Better. Kindly allow the Field of View 90° cone of vision (or) Better. Tender Condition Prevails
74 Technicalmust be inbuilt or else calibration device must be supplied along with FD at
free of cost.
Calibration of the instrument will be done by govt approved agency at prescribed
period
Bidder Understanding is correct.
Tender Condition Prevails.
75 Technicalmust be inbuilt or else calibration device must be supplied along with GD at
free of cost
calibration of the instrument will be done by govt approved agency at prescribed
period
Bidder Understanding is correct.
Tender Condition Prevails.
76
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical PRESSUREGAUGESKindly allow following makes ALTOP
Precision Mass (Previously ASCHCROFT)
Please refer notes to Annexure VI -
Recommended Vendor List
77
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical TEMPERATURE GAUGES
Kindly allow following makes
ALTOP
Precision Mass (Previously ASCHCROFT)
Please refer notes to Annexure VI -
Recommended Vendor List
78
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical SOLENOID VALVES/ACTUATOR
Kindly allow following makes
NELES Actuator ( Previously ROTEX)
ELOMATIC
Please refer notes to Annexure VI -
Recommended Vendor List
79
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical TWO WAY / THREE WAY VALVES/ 2-WAY DRAIN VALVES Kindly allow DK LOKPlease refer notes to Annexure VI -
Recommended Vendor List
80
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical SS FITTINGS & VALVES Kindly allow DK LOKPlease refer notes to Annexure VI -
Recommended Vendor List
81
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical FLP SWITCH
Kindly allow
Shudir Switch Gear
Shyam Switch Gear
Please refer notes to Annexure VI -
Recommended Vendor List
82
ANNEXURE – VI:
RECOMMENDED
VENDOR LIST
Technical ON OFF BALL/NEEDLE VALVE Kindly allow Baumer needle valve for instrument isolationPlease refer notes to Annexure VI -
Recommended Vendor List
83
17.0 TERMS OF
PAYMENT
61 of 100 (Vol.I)
17.1 Payment towards Supply (Booster Package)
i) 80% (Eighty Percent) Payment shall be released against receipt of
materials at site on submission of manufacturer’s certificates, invoice,
ii) 10% (Ten Percent) Payment shall be released after successful completion
of installation, Testing and Commissioning of each Booster package at the
site and Acceptance thereof by the OWNER.
iii) Balance 10% (Ten Percent) shall be released after successful Performance
acceptance Test at site and acceptance by owner for each Boosters.
Please amend the clause as follows:
100% of supply value and O&M payments within 30 days against receipt of
material/ equipment at site.
100% payment to be released within 30 days from the date of supply.
Tender Condition Prevails
92
Clause no. 4.4
Pg no. 13 of
Volume II
Technical
2 nos. mass flow meters to measure the Natural Gas consumption at
packages inlet and package discharge (both Coriolis type) with online test
arrangement.
2 Nos. Mass Flow Meter is required to be installed in Online Compressor to
calculate package gas loss. Since there is no package gas loss in Booster
Compressor, we feel that additional flow meter at discharge line is not required. It
will just add a considerable cost of compressor's package and O&M cost.
Please confirm.
Tender Condition Prevails
93
Clause no. 4.13
Pg no. 13 of
Volume II
TechnicalBlock and bleed valves to be provided for Pressure gauges and pressure
Transmitters.
Bleed valve are larger in size which are installed in the large gas pipeline of online
compressor. The pipeline of the daughter booster compressor is small and there is
less space in it. Therefore we are using needle valve from last 20 years and giving
satisfactory performance for more than 500 compressors supplied till date
Please confirm
Tender Condition Prevails
94
Clause no. 4.15
Pg no. 13 of
Volume II
Technical
Main incoming cable from owners Power Distribution Board (PDB) to main
control panel of the Booster through heavy duty GI conduit or trenches,
Earthing Cable from owner’s electronic earth pit (EE) for electronic circuit in
control panel, cable from owner’s main earthing grid to control panel for
body earth and all inter connecting cables including complete erection
accessories like double compression cable gland, cable tags, lugs etc. as
required.
We confirm to supply main incoming cable of 50 mtrs. only. Laying through GI
conduit / trenches shall be in the scope of customer
Please confirm.
Tender Condition Prevails
95
Clause no. 4.18
Pg no. 13 of
Volume II
Technical One no. relief valve at each stage discharge, first (1st) stage suction.
As per our manufacturing standard relief valve at 1st stage suction is not required
because suction pressure is always reducing from 200 to 30 bar.
However we confirm that any safety requirement will not be bypassed due to this.
Please confirm.
Refer Corrigendum-I
96
Clause no. 4.4
Pg no. 13 of
Volume II
TechnicalBidder to provide Instrument air with an electric motor driven air
compressor with a suitably sized receiver & Refrigerant type air drier system.
We will provide heatless air dryer in place refrigerent type air dryer system.
Request you to allow the same. We have provided the same in all the packages
supplied till date to other CGDs
Please confirm.
Tender Condition Prevails
97
Clause no. 6.1
Pg no. 15 of
Volume II
TechnicalAll cabling (supply & laying) from electrical room to booster compressor shall
be in bidder’s scope.
Bidder can supply Cable and ESD swtiches. However laying of cables will be in the
scope of M/s IGL
Please confirm
Tender Condition Prevails
98
Clause no. 6.15
Pg no. 16 of
Volume II
Technical
The power factor (PF) of the whole electrical system should not be below
0.95. Motor feeder shall be provided with energy meter, heavy duty switch,
HRC link type with single phase presenter fuses, contractors (AC-3 Duty), bi-
metal relay switch fuse unit, voltmeter, push buttons, earth leakage relays,
indication lamps for start/stop/trip/ etc. Ammeters shall be provided for all
motors above 3.7. KW rating. Stop push buttons shall be lockable and have
stay put except in case of critical devices such as lube oil pumps etc.
Capacitor Bank is not required and it is not possible to provide this provision in
flame proof compressor panel due to excess heat in capacitor bank.
We request you to take capacitor bank in the scope of IGL & install the same in PDB
room if required. Please confirm.
Capacitor Bank will be in scope of IGL
and will be installed suitably in electrical
room.
99
Clause no. 9.25
Pg no. 25 of
Volume II
Technical
The temperature gauge shall be generally mercury in steel field type.
Capillary tubing shall be min. SS304 with SS flexible armouring. The gauge
shall have an accuracy of +1% FSD and 100mm dial size.
Temperature gauge of 100 mm dial are larger in size which are installed in the large
gas pipeline of online compressors. The pipeline of the daughter booster
compressor is small and there is less space in it. Therefore we are using Pressure
gauge of 63 mm dial size from last 20 years and are giving satisfactory performance
for more than 500 compressors supplied till date including previous supplies to IGL.
Please confirm
Refer Corrigendum-I
100
Clause no. 10.13
Pg no. 27 of
Volume II
Technical
Redundancy in PLC is required. PLC shall incorporate all process parameters
(specified elsewhere) and status of Booster, engine & priority panels and
shall be modular in construction with 100% redundancy with respect to CPU,
Power supply, Interface. PLC components/ system shall be tropicalized, MIL
standard adopted with complete wiring and necessary terminals. Wiring to
be color coded with cross ferruling in position. PLC shall be capable of
carrying out on line routines for at least ten separate loops without affecting
the scan, cycle & updating time etc. PLC shall be configured as a remote
terminal unit of supervisory computer and data acquisition system complete
with GPRS
and Ethernet connectivity. One card for transferring and accessing data from
minimum twenty devices with RS485 port shall be provided. In case of failure
of master/ active controller/ CPU, standby controller/ CPU should take over
the control in bump less manner. All values & data should be available
through both the controllers immediately, i.e. there should be no data loss.
We suggest, double PLC is not required for operational performance of daughter
booster compressor as this is required in critical applications like medical surgery,
chemical plants, online compressors etc. This requirement will unnecessarily
increase the cost of daughter booster compressor. Kindly amend your requirement
accordingly.
Tender Condition Prevails
101
Clause no. 10.30
Pg no. 29 of
Volume II
Technical
The bidder shall ensure integrity of compressor package and safety of
electrical supply system available at back end while testing package, at site.
Also, bidder shall arrange its own control/ single phase (UPS supply) for
testing and commissioning of package.
As the UPS supply in the scope of IGL, it is not possible to arrange UPS only for
commissioning at each and every site.
Please include the same in the scope of M/s IGL.
Tender Condition Prevails
102
Clause no. 12.3
Pg no. 33 of
Volume II
Technical
Penalty for Non-Performance during Period of Operation & Maintenance:
The penalty in case of breakdown /shutdown (beyond stipulated time frame)
would be as below
• Beyond 8 hours upto 16 hours : Rs 5000
• Beyond 16 Hours upto 24 hours :Rs 10,000
• Beyond 24 Hours upto 32 Hours :Rs 15,000
• Beyond 32 Hours to upto 40 Hours: Rs 20,000
• Beyond 40 Hours to upto 72 Hours : 25,000
Penalty proposed by M/s IGL is very high and not acceptable. We request to amend
the penalty as follows:-
a) In case the equipment is down for more than 4 hours to 12 hours on any day
then penalty @ Rs.2500/- shall be applicable.
b) In case the equipment is down for more than 12 hours to 48 hours on any day
then penalty @ Rs.5000/-shall be applicable.
d) Maximum penalty imposed in a particular month for any case should not exceed
25% of monthly bill value of work done at a particular DBS in a particular month.
Tender Condition Prevails
103
Clause no. 13.3
Pg no. 36 of
Volume II
Technical Space Heater Supply
Space heater is not required as per Indian climatic conditions. We are running more
than 500 compressors without space heater and are giving satisfactory
performance.
Please confirm
Tender Condition Prevails
104
Annexure - III
Pg no. 51 of
Volume II
TechnicalAnnexure - XIII
4. Method of starting - Soft Starter
Soft Starter is not required as Booster compressr starts on unloaded condition and
motor will not draw current beyond specified limit, Star-Delta starter will not cause
any major voltage drop.
Please confirm
Refer Corrigendum-I
105
Annexure - XIII
Pg no. 92 of
Volume II
Technical FLP Motor
Please add OME s.r.l Italy Motor as M/s Crompton Greaves has shut down the
manufacturing and there is delivery and quality issue with M/s Bharat Bijlee. We
have started using OME s.r.l. Motors. OME s.r.l. Motor has been approved by SGL,
MNGL, IndianOil-Adani Gas and Green Gas. These motors have been approved by
PESO.
Please refer notes to Annexure VI -
Recommended Vendor List
106Annexure - VI
Volume IITechnical FLP Switchgear:
Please add Sudhir, Shyaam and Kaysons Make FLP Switchgear as demand of DBC is
very high. The same has also been approved by IndianOil-Adani, MNGL, SGL and
Green Gas. These Switchgear have been approved by PESO.
Please refer notes to Annexure VI -
Recommended Vendor List
107Annexure - VI
Volume IITechnical SS Fittings & Valves
Please add DK-LOK make SS fittings and Valves. DK LOK is already approved in all
other CGDS.
Please refer notes to Annexure VI -
Recommended Vendor List
108Annexure - VI
Volume IITechnical IR Gas detectors:
Please include Draeger make GD in approved vendor list. The same is already
approved by all other CGDS.
Please refer notes to Annexure VI -
Recommended Vendor List
109Annexure - VI
Volume IITechnical
UV Flame detectors: Please include Draeger make FD in approved vendor list. The same is already
approved by all other CGDS.
Please refer notes to Annexure VI -
Recommended Vendor List
110Annexure - VI
Volume IITechnical
Air Compressor Please include ICL make Air Compressor in approved vendor list. The same is
already approved by all other CGDS.
Please refer notes to Annexure VI -
Recommended Vendor List
111Pg no. 9 of
Volume ICommercial
The bidder, in the last seven (07) years from the date of issue of tender, shall
have
engineered, manufactured, tested and supplied to customer from the
proposed facility of manufacturing, at least 06 no. of Hydraulic CNG Booster
package of minimum 250SCMH capacity or above and Booster package
should have been running in India satisfactorily in the field for a period of
minimum 4000 hours as on date of issue/publish of tender.
It is submitted that Scope of Work in Group A and Group B is same. Work would be
awarded in both the groups at the lowest price received in either of the group.
Hence, for sake of equity and more competition, in both the groups, bidder’s
qualification criteria should be as that of Group B. Hence, the said clause as
mentioned may please be modified as below:
“The bidder, in the last seven (07) years from the date of issue of tender, shall have
engineered, manufactured, tested, and supplied to customer from the proposed
facility of manufacturing, at least 06 no. of Hydraulic CNG Booster package of
minimum 250SCMH capacity or above.
Tender Condition Prevails.
112Pg no. 10 of
Volume ICommercial
The bidder should have achieved the minimum annual turnover of Rs. 9.10
Cr in any one of the last three preceding financial years.
Since the company has proposed to split the total quantity in many bidders.
Contractual award to each bidder will also be less. Hence, the financial turnover of
the bidder shall also consider the turnover requirement accordingly. Lower
turnover will enable the more participation by the bidders and will lead to
competitive prices. Hence, the said clause as mentioned may please be modified as
below:
“The bidder should have achieved the minimum annual turnover of Rs. 7 Cr in any
one of the last three preceding financial years.”
Tender Condition Prevails.
113Pg no. 14 of
Volume ICommercial
If only 01 bidder qualifies, then 4 boosters will be awarded and based on
satisfactory performance of 4 boosters, 2 more boosters will be awarded.
bidder and based on satisfactory performance, 2 more boosters will be
awarded to each.
bidder and based on satisfactory performance, 2 more boosters will be
awarded to each.
and based on satisfactory performance, 1 more boosters will be awarded to
each.
In case, more than one bidder qualifies, and lowest bidder is not in position to
supply the entire lot of compressors, L2/L3 bidders shall be offered the balance
quantity at matching L1 prices.
As the same will lead to more competitive prices due to advantage of economy of
scale.
Tender Condition Prevails.
114 Annexure - VI Technical Recommended Vendor List
We request Client to consider and approve following mentioned makes
• Filter – Delta
• Air Compressor – REAL / Unique Make
• Tube Fittings – DK-LOK
• GD&FD – Ambetronics
• Electric Motors – Hindustan Motor
• Co2 Cylinder Valve – Kuldeep Engineering
We request IGL to allowed these in the approved list.
Please refer notes to Annexure VI -
Recommended Vendor List
115 Technical
Main incoming cable from owners Power Distribution Board (PDB) to main
control panel of the Booster through heavy duty GI conduit or trenches,
Earthing Cable from owner’s electronic earth pit (EE) for electronic circuit in
control panel, cable from owner’s main earthing grid to control panel for
body earth and all inter connecting cables including complete erection
accessories like double compression cable gland, cable tags, lugs etc.
as required.
Client to specify the length of cable to considered for this.
Average 50 Mtr. can be considered for
loading purpose. However, supply &
laying of cable will be done as per actual
site requriement.
Tender Condition Prevail.
116
Clause no. 4.4
Pg no. 13 of
Volume II
Technical
2 nos. mass flow meters to measure the Natural Gas consumption at
packages inlet and package discharge (both Coriolis type) with online test
arrangement.
We propose that 1 no. mass flow meter is okay for hydraulic type booster
compressor, as there is such venting loss like mechanical type reciprocating
compressor.
Tender Condition Prevails.
117
Clause no. 4.18
Pg no. 1 of
Volume II
Technical One no. relief valve at each stage discharge, first (1st) stage suction.
We request to cancel first stage suction relief valve, as daughter booster suction
pressure is keeping decreasing, thus it’s not necessary to install pressure relief
valve.
Refer Corrigendum-I
118
Clause no. 4.22
Pg no. 14 of
Volume II
TechnicalInlet and outlet manual and automatic isolating valves for maintenance &
emergency.
Our understanding is that the automatic isolating valves mentioned here is the
valves on priority panel for compressor suction from LCV to booster and discharge
from compressor to cascade. Pls clarify.
Bidder Understanding is Correct.
119
Clause no. 6.2
Pg no. 15 of
Volume II
TechnicalAir compressor with discharge pressure of 7 kg/cm2 suitable for 1.5 KW
electric motor rating with dryer shall be supplied by the bidder.
Our booster does not require instrument air, thus we request to we will not supply
air compressor. Pls approve.Tender Condition Prevails.
120
Clause no. 7
Pg no. 16 of
Volume II
Technical Opposed design with lined cylinder We are not using lined cylinder, pls approve OEM design. Bidder may supply his proprietry design.
121
Clause no. 9.13
Pg no. 22 of
Volume II
TechnicalPriority panel shall be of 3 Bank priority panel along with emergency
actuators.We request to approve electro type SOV for priority panel. Tender Condition Prevails.
122
Clause no. 10.7
Pg no. 26 of
Volume II
Technical
PLC shall be suitable for interfacing with printer (HP Laser printer) for getting
the printout of the parameters recorded (as mentioned above) for the last
24 hours through remote HMI PC (if provided)/ external Laptop in same
format as programmed in PLC.
Our understanding is that, the required function is to export data from PLC and can
be printed out from PC/Laptop, rather than directly connect printer to PLC/HMI, as
most commonly used model does not support such function. Pls clarify.
Tender Condition Prevails.
123
Clause no. 10.13
Pg no. 27 of
Volume II
Technical The gauge shall have an accuracy of +1% FSD and 100mm dial size. We request to accept 63mm dial size. Refer Corrigendum-I
124
Clause no. 10.21
Pg no. 28 of
Volume II
Technical Non- resettable electromechanical hour meter on local control panel. We propose that its not necessary, as it’s not working in this way in the market. Tender Condition Prevails.
125
Clause no. 11.1
Pg no. 32 of
Volume II
Technical
Painting of Internal process piping should be as per international colour
coding standard, e.g- Gas line-Yellow, Water line- green, Airline-Blue, Fire
suppressing system – Red etc.
It’s not proposed to paint on stainless steel process gas system. Tender Condition Prevails.
126
Specification of FD
Pg no. 60 of
Volume II
Technical four year warranty against sensor and electronics for the supplied product.All suppliers are giving standard warranty of 12 months from commissioning or 18
months from supply, whichever is earlierTender Condition Prevails.
127
Specification of FD
Pg no. 60 of
Volume II
Technical 4 year warranty against sensor and electronics for the supplied product.All suppliers are giving standard warranty of 12 months from commissioning or 18
months from supply, whichever is earlierTender Condition Prevails.
128
Spec for Discharge
filter
Pg no. 63 of
Volume II
Technical
CE mark in accordance with European Directive for Pressure Equipment, PED
( 97 / 23 / EC ) Are Designed to meet the ATEX European Directive for
Explosion Protection , ( 94 / 9 / EC) All natural gas filters in accordance to CE